U.S. patent number 9,199,112 [Application Number 14/217,580] was granted by the patent office on 2015-12-01 for lower limb stretching workout device.
This patent grant is currently assigned to ST LIFE CO., LTD.. The grantee listed for this patent is ST LIFE CO., LTD.. Invention is credited to Jue-Yao Chen.
United States Patent |
9,199,112 |
Chen |
December 1, 2015 |
Lower limb stretching workout device
Abstract
A lower limb stretching workout device includes a frame unit,
two sliding plates, a motor assembly, and two cranks. The frame
unit has two guide rails opposing each other. Rollers are disposed
at the sliding plates and slidingly movable along the guide rails.
The cranks each have a driving end and an acting end. The driving
end is pivotally connected to a cam. The acting end is pivotally
connected to a lug beneath each of the sliding plates. The motor
assembly drives a rotating shaft to rotate through a transmission
module. The torque of the rotating shaft is converted by the cams
into a push/pull for driving the cranks to push/pull the sliding
plates, thereby causing the sliding plates to slidingly move toward
each other and away from each other. A user's two feet rest on the
sliding plates, respectively, to stretch the user's lower limbs by
extension and flexion.
Inventors: |
Chen; Jue-Yao (Changhua County,
TW) |
Applicant: |
Name |
City |
State |
Country |
Type |
ST LIFE CO., LTD. |
Changhua County |
N/A |
TW |
|
|
Assignee: |
ST LIFE CO., LTD. (Changhua
County, TW)
|
Family
ID: |
54141111 |
Appl.
No.: |
14/217,580 |
Filed: |
March 18, 2014 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20150265868 A1 |
Sep 24, 2015 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B
23/04 (20130101); A63B 21/15 (20130101); A63B
21/0004 (20130101); A63B 21/00181 (20130101); A61H
1/0244 (20130101); A61H 2201/149 (20130101); A63B
2023/006 (20130101); A61H 2201/1215 (20130101); A61H
2201/1664 (20130101); A61H 2001/0248 (20130101); A61H
2203/0406 (20130101) |
Current International
Class: |
A63B
26/00 (20060101); A63B 21/00 (20060101); A63B
23/04 (20060101); A63B 23/00 (20060101) |
Field of
Search: |
;601/23,27,29,31,33,35,84,89,90,93,97,98,101,103,104 ;482/907 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Ginsberg; Oren
Assistant Examiner: Anderson; Megan
Attorney, Agent or Firm: Kamrath; Alan D. Kamrath IP
Lawfirm, P.A.
Claims
What is claimed is:
1. A lower limb stretching workout device, comprising: a frame unit
having two guide rails opposing each other; two sliding plates each
with two edges having a plurality of rollers slidingly movable
along the two guide rails and within a guiding range; a motor
assembly for driving a rotating shaft through a transmission
module, the motor assembly comprising a motor holder, a motor, and
a motor spindle, the motor being fastened to the motor holder, the
motor spindle penetrating the motor and protruding from a side of
the motor to reach the motor holder, the transmission module
comprising first through fourth belt pulleys, first and second
belts, and an axle rod, the axle rod being fixed to the motor
holder, the first belt pulley being fixed to the motor spindle, the
fourth belt pulley being fixed to the rotating shaft, the second
and third belt pulleys being fixed to each other, the second and
third belt pulleys being pivotally connected to the axle rod, the
first belt being wound around the first and second belt pulleys,
the second belt being wound around the third and fourth belt
pulleys; and the two cranks each having a driving end and an acting
end, the driving end being pivotally connected to a cam, and the
acting end being pivotally connected to a lug at a bottom surface
of each of the two sliding plates, wherein, when the motor assembly
drives the transmission module such that the transmission module
drives the rotating shaft to rotate, a torque of the rotating shaft
is converted by the cams into a push and a pull for driving the two
cranks to push and pull the two sliding plates, thereby causing the
two sliding plates to slidingly move toward each other and away
from each other.
2. The lower limb stretching workout device of claim 1, wherein an
idle wheel is fixed to the rotating shaft and adapted to preclude
any dead point of rotation motion of the two cranks.
3. The lower limb stretching workout device of claim 1, wherein the
cam is enclosed snugly by a bearing, and the bearing is disposed
snugly in a round hole at the driving end of each of the
cranks.
4. The lower limb stretching workout device of claim 1, wherein a
plurality of legs is disposed at a periphery of a bottom of the
frame unit, such that the frame unit rests on a floor through the
legs.
Description
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to the technical field of workout
equipment, and more particularly, to a lower limb stretching
workout device for stretching the lower limbs by extension and
flexion.
2. Description of Related Art
Various commercially available workout devices work muscles in
every parts of the human body. The workout devices related to the
lower limbs include treadmills, stair steppers, and elliptical
trainers. Every regular user of the aforesaid workout devices
understands that they work the front and rear muscles in the lower
limbs.
In fact, a lower limb workout is not restricted to the front and
rear muscles in the lower limbs but also includes stretching the
inner and outer muscles in the lower limbs in order for the lower
limb workout to be complete. Moreover, when carried out solely by
the lower limbs, that is, without any external exercise aid, a
lower limb workout is exhausting and thus likely to be discouraging
to the regular workout device users.
SUMMARY OF THE INVENTION
It is an objective of the present invention to provide a lower limb
stretching workout device characterized in that: a motor assembly
drives two cams; the two cams drive two cranks to pull two sliding
plates to slide toward each other and away from each other; and a
user's two feet rest on the two sliding plates, respectively, to
extend and flex together with the two sliding plates, thereby
stretching the user's lower limbs by extension and flexion.
In order to achieve the above and other objectives, the present
invention provides a lower limb stretching workout device,
comprising: a frame unit having two guide rails opposing each
other; two sliding plates each with two edges having a plurality of
rollers slidingly movable along the two guide rails and within a
guiding range; a motor assembly for driving a rotating shaft
through a transmission module, the motor assembly comprising a
motor holder, a motor, and a motor spindle, the motor being
fastened to the motor holder, the motor spindle penetrating the
motor and protruding from a side of the motor to reach the motor
holder, the transmission module comprising first through fourth
belt pulleys, first and second belts, and an axle rod, the axle rod
being fixed to the motor holder, the first belt pulley being fixed
to the motor spindle, the fourth belt pulley being fixed to the
rotating shaft, the second and third belt pulleys being fixed to
each other, the second and third belt pulleys being pivotally
connected to the axle rod, the first belt being wound around the
first and second belt pulleys, the second belt being wound around
the third and fourth belt pulleys; and the two cranks each having a
driving end and an acting end, the driving end being pivotally
connected to a cam, and the acting end being pivotally connected to
a lug at a bottom surface of each of the two sliding plates,
wherein, when the motor assembly drives the transmission module
such that the transmission module drives the rotating shaft to
rotate, a torque of the rotating shaft is converted by the cams
into a push and a pull for driving the two cranks to push and pull
the two sliding plates, thereby causing the two sliding plates to
slidingly move toward each other and away from each other. The
user's two feet rest on the two sliding plates, respectively, to
extend and flex together with the two sliding plates, thereby
stretching the user's lower limbs by extension and flexion.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective schematic view of the embodiment of the
present invention;
FIG. 2 is an exploded view of the embodiment of the present
invention;
FIG. 3 is an exploded view of a crank and a cam according to the
embodiment of the present invention;
FIG. 4 is a lateral schematic view of a push and a pull of the
cranks according to the embodiment of the present invention;
FIG. 5 is a partial perspective schematic view of a transmission
module according to the embodiment of the present invention;
FIG. 6 is a bottom perspective schematic view of the embodiment of
the present invention; and
FIG. 7 is a schematic view of a stretching workout carried out
according to the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENT OF THE INVENTION
The present invention provides a lower limb stretching workout
device.
Referring to FIG. 1 through FIG. 7, the present invention provides
a lower limb stretching workout device, comprising a frame unit 10,
two sliding plates 21, 22, a motor assembly 30, and two cranks 41,
42.
The frame unit 10 has two guide rails 11, 12 opposing each
other.
A plurality of rollers 211, 221 is disposed at two edges of each of
the two sliding plates 21, 22. The rollers 211, 221 are slidingly
movable along the two guide rails 11, 12 and within a guiding
range.
The motor assembly 30 drives a rotating shaft 32 through a
transmission module 31.
The two cranks 41, 42 each have a driving end 411, 421 pivotally
connected to a cam 43, 44. The two cranks 41, 42 each have an
acting end 412, 422 pivotally connected to a lug 212, 222 at the
bottom surface of each of the two sliding plates 21, 22. Hence,
when the motor assembly 30 drives the transmission module 31 such
that the transmission module 31 drives the rotating shaft 32 to
rotate, the torque of the rotating shaft 32 is converted by the cam
43, 44 into a push and a pull for driving the two cranks 41, 42.
The two cranks 41, 42 push and pull the two sliding plates 21, 22,
respectively, such that the two sliding plates 21, 22 slidingly
move toward each other and away from each other. A user's two feet
rest on the two sliding plates 21, 22, respectively, to extend and
flex together with the two sliding plates 21, 22, thereby
stretching the user's lower limbs by extension and flexion.
Regarding the lower limb stretching workout device, an idle wheel
45 is fixed to the rotating shaft 32 and adapted to preclude any
dead point of the rotation motion of the two cranks 41, 42.
Regarding the lower limb stretching workout device, the cams 43, 44
are each enclosed snugly by a bearing 46, and the bearing 46 is
disposed snugly in a round hole 4111, 4211 at the driving end 411,
421 of the cranks 41, 42.
Regarding the lower limb stretching workout device, the motor
assembly 30 comprises a motor holder 33, a motor 34, and a motor
spindle 341. The motor 34 is fastened to the motor holder 33. The
motor spindle 341 penetrates the motor 34 and protrudes from one
side of the motor 34 to reach the motor holder 33.
Regarding the lower limb stretching workout device, the
transmission module 31 comprises first, second, third and fourth
belt pulleys 311, 312, 313, 314, first and second belts 315, 316,
and an axle rod 317. The axle rod 317 is fixed to the motor holder
33. The first belt pulley 311 is fixed to the motor spindle 341.
The fourth belt pulley 314 is fixed to the rotating shaft 32. The
second and third belt pulleys 312, 313 are fixed to each other. The
second and third belt pulleys 312, 313 are pivotally connected to
the axle rod 317. The first belt 315 is wound around the first and
second belt pulleys 311, 312. The second belt 316 is wound around
the third and fourth belt pulleys 313, 314.
Regarding the lower limb stretching workout device, a plurality of
legs 50 is disposed at the periphery of the bottom of the frame
unit 10, such that the frame unit 10 rests on the floor through the
plurality of legs 50.
Given its aforesaid constituent elements, the lower limb stretching
workout device lies flat on the floor, such that the user's lower
limbs rest on the sliding plates 21, 22, respectively. As soon as
the motor assembly 30 is started to rotate, the motor assembly 30
drives the transmission module 31, and the transmission module 31
drives the rotating shaft 32 to rotate, such that the torque of the
rotating shaft 32 is converted by the cam 43, 44 into a push and a
pull for driving the two cranks 41, 42. The two cranks 41, 42 push
and pull the two sliding plates 21, 22, respectively, such that the
two sliding plates 21, 22 slidingly move toward each other and away
from each other. The user's two feet rest on the two sliding plates
21, 22, respectively, to extend and flex together with the two
sliding plates 21, 22, thereby stretching the user's lower limbs by
extension and flexion.
Accordingly, the lower limb stretching workout device of the
present invention is novel and thus meets the novelty requirement
of patentability. The lower limb stretching workout device of the
present invention is entirely innovative and thus meets the
non-obviousness requirement of patentability. The lower limb
stretching workout device of the present invention has industrial
applicability, because it is characterized in that: a motor
assembly drives two cams; the two cams drive two cranks to pull two
sliding plates to slidingly move toward each other and away from
each other; and a user's two feet rest on the two sliding plates,
respectively, to stretch the user's lower limbs by extension and
flexion.
* * * * *